package com.amigo.online.provider.sync.util;

import java.util.HashMap;
import java.util.Map;

public class Test {
    public static void main(String[] args) {
        testToString();
    }

    private static void testString() {
        String content = null;
        System.out.println(content);
        System.out.println(content + "");
        Map<String, Object> map = new HashMap<>();
    }

    private static void testToString() {
        Integer i = 100;
        Integer o = null;
        System.out.println("100");
        System.out.println(i.toString());
        System.out.println(o.toString());
    }
}
